#### [[返回文档目录]](../index.html) [[查看原始页]](../content/%E5%AF%B9%E6%A0%91%E8%8E%93%E6%B4%BE%20Raspberry%20Pi%20%E8%BF%9B%E8%A1%8C%E8%B6%85%E9%A2%91%E6%B5%8B%E8%AF%95%20-%20%E5%BC%80%E6%BA%90%E4%B8%AD%E5%9B%BD%20OSChina.NET.html) # 对树莓派 Raspberry Pi 进行超频测试 - 开源中国 OSChina.NET ## 对树莓派进行超频？ Raspberry Pi 非常惊人，而且售价只有 35 美金。我一直摆弄了几周。最近 Raspberry Pi 开发组提供了一份 [树莓派超频指南](http://www.raspberrypi.org/archives/2008) ([中文](http://www.oschina.net/translate/how-to-overclock-raspberry-pi))，可以将树莓派的 CPU 频率从 700兆超频到 1G，而且他们保证超频对设备并无损害！ 我的问题是 **超频对性能影响有多大？** 因此我决定对此进行测试，我使用了 [nbench Linux](http://www.tux.org/~mayer/linux/bmark.html) 工具来对我的树莓派 CPU 进行基准测试，通过 theraspi-config 命令行工具来更改 CPU 的频率，然后对每个不同的频率进行单独测试。 ## 测试结果 下表中显示了在不同的频率下的 “integer index” 和 “floating-point index” 计算结果，数字越高表示性能越好。 <table border="1" cellpadding="0" cellspacing="0" style="border: 1px outset rgb(128, 128, 128); display: table; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 144px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; width: 308px;"> <tbody style="border: 0px none rgb(128, 128, 128); display: table-row-group; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 144px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 308px;"> <tr style="border: 0px none rgb(128, 128, 128); display: table-row; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 24px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 308px;"> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 72px;"> <strong style="display: inline; font-style: normal; font-variant: normal; font-weight: bold; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; margin: 0px; padding: 0px; text-align: left; text-decoration: none;">CPU (MHz)</strong> </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 90px;"> <strong style="display: inline; font-style: normal; font-variant: normal; font-weight: bold; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; margin: 0px; padding: 0px; text-align: left; text-decoration: none;">Integer index</strong> </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 140px;"> <strong style="display: inline; font-style: normal; font-variant: normal; font-weight: bold; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; margin: 0px; padding: 0px; text-align: left; text-decoration: none;">Floating-point index</strong> </td> </tr> <tr style="border: 0px none rgb(128, 128, 128); display: table-row; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 24px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 308px;"> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 72px;"> 700 </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 90px;"> 10.752 </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 140px;"> 3.474 </td> </tr> <tr style="border: 0px none rgb(128, 128, 128); display: table-row; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 24px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 308px;"> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 72px;"> 800 </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 90px;"> 13.024 </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 140px;"> 4.244 </td> </tr> <tr style="border: 0px none rgb(128, 128, 128); display: table-row; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 24px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 308px;"> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 72px;"> 900 </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 90px;"> 14.475 </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 140px;"> 4.653 </td> </tr> <tr style="border: 0px none rgb(128, 128, 128); display: table-row; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 24px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 308px;"> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 72px;"> 950 </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 90px;"> 14.575 </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 140px;"> 4.501 </td> </tr> <tr style="border: 0px none rgb(128, 128, 128); display: table-row; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 24px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 308px;"> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 72px;"> 1000 </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 90px;"> 16.237 </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 140px;"> 5.475 </td> </tr> </tbody> </table> 上表中数据显示，从700兆超频到1G，性能提升明显。 ### 性能提升的百分比 <table border="1" cellpadding="0" cellspacing="0" style="border: 1px outset rgb(128, 128, 128); display: table; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 144px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; width: 352px;"> <tbody style="border: 0px none rgb(128, 128, 128); display: table-row-group; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 144px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 352px;"> <tr style="border: 0px none rgb(128, 128, 128); display: table-row; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 24px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 352px;"> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 72px;"> <strong style="display: inline; font-style: normal; font-variant: normal; font-weight: bold; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; margin: 0px; padding: 0px; text-align: left; text-decoration: none;">CPU (MHz)</strong> </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 137px;"> <strong style="display: inline; font-style: normal; font-variant: normal; font-weight: bold; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; margin: 0px; padding: 0px; text-align: left; text-decoration: none;">Int improvement (%)</strong> </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 137px;"> <strong style="display: inline; font-style: normal; font-variant: normal; font-weight: bold; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; margin: 0px; padding: 0px; text-align: left; text-decoration: none;">FP improvement (%)</strong> </td> </tr> <tr style="border: 0px none rgb(128, 128, 128); display: table-row; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 24px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 352px;"> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 72px;"> 700 </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 137px;"> 100 </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 137px;"> 100 </td> </tr> <tr style="border: 0px none rgb(128, 128, 128); display: table-row; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 24px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 352px;"> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 72px;"> 800 </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 137px;"> 121 </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 137px;"> 122 </td> </tr> <tr style="border: 0px none rgb(128, 128, 128); display: table-row; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 24px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 352px;"> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 72px;"> 900 </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 137px;"> 135 </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 137px;"> 134 </td> </tr> <tr style="border: 0px none rgb(128, 128, 128); display: table-row; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 24px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 352px;"> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 72px;"> 950 </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 137px;"> 136 </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 137px;"> 130 </td> </tr> <tr style="border: 0px none rgb(128, 128, 128); display: table-row; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 24px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 352px;"> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 72px;"> 1000 </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 137px;"> 151 </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 137px;"> 158 </td> </tr> </tbody> </table> ### Performance improvements over previous speed <table border="1" cellpadding="0" cellspacing="0" style="border: 1px outset rgb(128, 128, 128); display: table; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 144px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; width: 352px;"> <tbody style="border: 0px none rgb(128, 128, 128); display: table-row-group; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 144px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 352px;"> <tr style="border: 0px none rgb(128, 128, 128); display: table-row; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 24px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 352px;"> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 72px;"> <strong style="display: inline; font-style: normal; font-variant: normal; font-weight: bold; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; margin: 0px; padding: 0px; text-align: left; text-decoration: none;">CPU (MHz)</strong> </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 137px;"> <strong style="display: inline; font-style: normal; font-variant: normal; font-weight: bold; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; margin: 0px; padding: 0px; text-align: left; text-decoration: none;">Int improvement (%)</strong> </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 137px;"> <strong style="display: inline; font-style: normal; font-variant: normal; font-weight: bold; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; margin: 0px; padding: 0px; text-align: left; text-decoration: none;">FP improvement (%)</strong> </td> </tr> <tr style="border: 0px none rgb(128, 128, 128); display: table-row; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 24px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 352px;"> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 72px;"> 700 </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 137px;"> 100 </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 137px;"> 100 </td> </tr> <tr style="border: 0px none rgb(128, 128, 128); display: table-row; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 24px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 352px;"> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 72px;"> 800 </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 137px;"> 121 </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 137px;"> 122 </td> </tr> <tr style="border: 0px none rgb(128, 128, 128); display: table-row; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 24px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 352px;"> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 72px;"> 900 </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 137px;"> 111 </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 137px;"> 110 </td> </tr> <tr style="border: 0px none rgb(128, 128, 128); display: table-row; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 24px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 352px;"> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 72px;"> 950 </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 137px;"> 101 </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 137px;"> 97 </td> </tr> <tr style="border: 0px none rgb(128, 128, 128); display: table-row; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 24px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 352px;"> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 72px;"> 1000 </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 137px;"> 111 </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 137px;"> 122 </td> </tr> </tbody> </table> ### 每一美元的性能价值 :) 下表中显示超频后的性价比体现 <table border="1" cellpadding="0" cellspacing="0" style="border: 1px outset rgb(128, 128, 128); display: table; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 144px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; width: 282px;"> <tbody style="border: 0px none rgb(128, 128, 128); display: table-row-group; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 144px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 282px;"> <tr style="border: 0px none rgb(128, 128, 128); display: table-row; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 24px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 282px;"> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 72px;"> <strong style="display: inline; font-style: normal; font-variant: normal; font-weight: bold; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; margin: 0px; padding: 0px; text-align: left; text-decoration: none;">CPU (MHz)</strong> </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 102px;"> <strong style="display: inline; font-style: normal; font-variant: normal; font-weight: bold; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; margin: 0px; padding: 0px; text-align: left; text-decoration: none;">Cost per Int ($)</strong> </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 102px;"> <strong style="display: inline; font-style: normal; font-variant: normal; font-weight: bold; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; margin: 0px; padding: 0px; text-align: left; text-decoration: none;">Cost per FP ($)</strong> </td> </tr> <tr style="border: 0px none rgb(128, 128, 128); display: table-row; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 24px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 282px;"> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 72px;"> 700 </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 102px;"> 3.26 </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 102px;"> 10.07 </td> </tr> <tr style="border: 0px none rgb(128, 128, 128); display: table-row; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 24px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 282px;"> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 72px;"> 800 </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 102px;"> 2.69 </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 102px;"> 8.25 </td> </tr> <tr style="border: 0px none rgb(128, 128, 128); display: table-row; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 24px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 282px;"> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 72px;"> 900 </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 102px;"> 2.42 </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 102px;"> 7.52 </td> </tr> <tr style="border: 0px none rgb(128, 128, 128); display: table-row; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 24px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 282px;"> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 72px;"> 950 </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 102px;"> 2.40 </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 102px;"> 7.78 </td> </tr> <tr style="border: 0px none rgb(128, 128, 128); display: table-row; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 24px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 282px;"> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 72px;"> 1000 </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 102px;"> 2.16 </td> <td style="border: 1px inset rgb(128, 128, 128); display: table-cell; font-style: normal; font-variant: normal; font-weight: normal; font-size: 14px; line-height: 22px; font-family: Verdana, sans-serif, 宋体; height: 22px; margin: 0px; padding: 0px; text-align: left; text-decoration: none; vertical-align: middle; width: 102px;"> 6.39 </td> </tr> </tbody> </table> ## 结论 上述的测试可以得出如下几点结论： 首先，我的测试结果跟官方的结果很接近。 其次，树莓派在超频模式下性能表现优异，从 700兆到1G，整数处理性能提升 151%，浮点数性能提升 158%。 第三，如果你不想冒险，可以把频率设定在 900 或者 950 兆，这样会更保险些。 ## 测试注意事项 为了运行这个测试，我禁用了 wpa\_supplicantandtransmission-daemon ，这对 nbench 测试可能会有 3.4% 的影响。 via [chimerasaurus](http://www.chimerasaurus.com/2013/01/raspberry-pi-overclocking-benchmarks/)